Clay is one of the oldest tile materials, after fired with high temperature, the performance of oldest brickwork cladding 

tiles become much more stable than ceramic tiles. 

Clay tiles raw material is natural clay, feldspar, sand etc. After natural drying, the raw material is pulverized 

into powder. The materials will be put into extrusion machine after adding an appropriate water. The wet tiles need to 

put natural environment for drying about 3 days, then 1.5 days in drying kiln. And 1.5 days in firing kiln. After that, the 

tiles will be delivered to split line, in there one tile will be split into two pieces. Final procedure is packing.

Clay brick tile was firstly produced in German which was made from certain percentage of many kinds of clay and a small 

amount of mountain flour by pre-mixing, powering mixing, vacuum extrusion, drying and kiln firing. The color of tiles are 

quite similar to natural mineral. That is why some foreigners named it Terracotta Tiles. In Taiwan China, local people 

named it ejection brick according to the extrusion work. In China mainland, it was named clay split brick basic on the split 

work after firing. Actually if from the point of material, it should be called clay tile (Japanese name)

From the original of clay tile we can know that this kind of tile is made from a certain percentage of different sintering 

degree clay, different colors and a small amount of mountain flour. However, the material of the hot-selling glazed ceramic 

tiles and full body ceramic tiles in the market is on conversely, using more mountain flour and less clay.